/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package com.tspp.professionAccounter.servlets;

import com.tspp.dao.DaoException;
import com.tspp.dao.dto.Speciality;
import com.tspp.professionAccounter.ProfessionAccounterBean;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Maks
 */
public class UpdateOrAddSpecialityServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        String id = request.getParameter("id");
        String name = request.getParameter("name");
        String code = request.getParameter("code");
        String maxStudents = request.getParameter("students");
        System.out.println(name);
        if (code.equals("") || name.equals("") || maxStudents.equals("")) {
            String url = response.encodeRedirectURL("update.jsp?error=" + "Fields can not be empty&id=" + id + "&name=" + encode(name) +
                    "&code=" + encode(code) + "&students=" + maxStudents);
            response.sendRedirect(url);
            return;
        }
        int studs = 0;
        try {
            studs = Integer.parseInt(maxStudents);
        } catch (NumberFormatException ex) {
            String url = response.encodeRedirectURL("update.jsp?error=" + "Students number must be an integer&id=" + id + "&name=" + encode(name) +
                    "&code=" + encode(code) + "&students=" + maxStudents);
            response.sendRedirect(url);
            return;
        }
        
        Speciality spec = new Speciality();
        spec.setCode(code);
        spec.setName(name);
        spec.setMaxStudentsNumber(studs);
        ProfessionAccounterBean bean = new ProfessionAccounterBean();
        try {
            if (id.equals("add")) {
                bean.addSpeciality(spec);
            } else {
                bean.updateSpeciality(Integer.parseInt(id), spec);
            }
            response.sendRedirect("index.jsp");
        } catch (DaoException ex) {
            throw new ServletException(ex.getMessage());
            //Logger.getLogger(UpdateOrAddSpecialityServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    private String encode(String par) throws UnsupportedEncodingException {
        return URLEncoder.encode(par, "UTF-8");
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
